T5 Oil

[Trike]

On a 3500 Heavy Duty 6.7, 2014. I am pulling 16,000 lb Rv. What do you folks recommend for a mileage interval and oil change in the Midwest. I was in Montana for 6 months and had the original T6 oil in it. I have 7,200 miles on it and am going to change oil. I think a T5 in this area...Missour, will work better than T6 at this time. What do you folks think and at how many mileage would you change? Thanks

 

[Larry Willard]

I am changing mine his weekend, will use Mobil 5w40 synthetic. I change per the owners manual-6 months or 15000 miles which ever comes first. This is the 2nd oil change and they are running 8000 to 10000 miles in the 6 month period.
Larry

 

[gtwitch]

My 2 cents If you have been using T6 it is synthetic and T5 is not, Ram came out with Syn in it that was Valvoline Blue from the factory! Stay with T-6 Synthetic!! Only my thoughts and 2 cents worth oppinion! and I can't spell either.

gtwitch in wyoming

 

[Camperman]

I change my oil when the EVIC gives the " change oil soon message". I use Valvoline Premium Blue 15/40 diesel oil.